Sound bar



1.1 is a front view of a sound bar showing a first embodiment of new design;

1.2 is a back view thereof;

1.3 is a left view thereof;

1.4 is a right view thereof;

1.5 is a top view thereof;

1.6 is a bottom view thereof;

1.7 is a front, left side perspective view thereof;

4.1 is a front view of a sound bar showing a second embodiment of new design;

4.2 is a back view thereof;

4.3 is a left view thereof;

4.4 is a right view thereof;

4.5 is a top view thereof;

4.6 is a bottom view thereof;

4.7 is a front, left side perspective view thereof;

5.1 is a front view of a sound bar showing a third embodiment of new design;

5.2 is a back view thereof;

5.3 is a left view thereof;

5.4 is a right view thereof;

5.5 is a top view thereof;

5.6 is a bottom view thereof; and

5.7 is a front, left side perspective view thereof.

The broken lines shown in the drawings illustrate portions of the sound bar that form no part of the claimed design. 

CLAIM The ornamental design for a sound bar, as shown and described. 